Improved roller tor boarding oystes-beedges



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THMAS P. SNK, OF LFARTON, NEW JERSEY.

Letters Patent No. 65,442, elated June 4, 1867.

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Beit known that I, THOMAS P. SINK, of Fairton, county of Cumberland7 and State of New Jersey, have invented new and useful improvements in Screw-Shaped Rollers for Boarding an Oyster-Dredge; and I do hereby declare the following to be an exact description thereof, reference beingl had to the accompanying drawings, andrto the letters of reference marked thereon, making a part of this specification, in Which- Figure l represents a view of the dredge or rake, and the serew-roller on the boat.

Figure 2 represents the dredge raised, with the teeth in the roller to unload the oysters.

The nature oi' my invention consists in the rollers with iizinges running toward the centre.

A represents the boat, BB the uprights that support the screw-roller C. The screw-roller C hasilanges D l), extending from the centre to extremities on cach end, as a right and left-hand screw. And the object of the double spiral screw on the roller is to board an oyster-dredge, and dispense with what is commonly called the cutters attached to the dredges, and `answer the purpose better for raising or liftingI the teeth over the roller as commonly used. A ratchet, E, is at one end of the roller, and the other end F. is smooth for the rope to v operate on that draws up the dredge that is formed of a rake, Gr, and iron bars H as commonly used.

What I claim as my invention, and desire to secure by Letters Patent, is`

The right and left-hand screw-roller as attached to the gunwale of an oyster-boat for the purpose of boarding an oyster-dredge, as herein described.

THOMAS P. SINK.

Witnesses:

JAS; CAMrBELL Jr., Taos. WELHAM. 

